Final answer:
The term 'straight' is used predominantly for self-identified heterosexuals of either sex.
Step-by-step explanation:
The statement is true. The term 'straight' is commonly used to refer to individuals who identify as heterosexual, meaning they are attracted to individuals of the opposite sex. The term is predominantly used for self-identified heterosexuals of either sex. It is important to note that sexual orientation is a personal and complex aspect of human identity, and there are various terms and categories to describe different sexual orientations.